I play random maps and civs on immortal difficulty and this time I rolled Dido on an archipelago map. Went full liberty and then went into exploration. Dido's free harbors + liberty's plus 1 happiness from city connection + exploration plus 1 for lighthouse/harbour/seaport meant that each city I founded was only causing 2 unhappiness. I ended up self founding about 8 cities and then rushed first to submarines (for defence) and then to battleships. Was actually planning on going for a science victory, but a lack of warmongers on the map forced my hand and I swept the map with my range 4 logistics battleships and then added air repair logistics bombers to it.
It was a fun game.
It was a fun game.